长光周期和短光周期对棉鼠（棉鼠属）松果体细胞超微结构的影响。

Effects of long and short photoperiod on the ultrastructure of pinealocytes of the cotton rat (Sigmodon hispidus).

作者信息

Karasek M, Matthews S A, King T S, Reiter R J

出版信息

J Pineal Res. 1986;3(4):323-30. doi: 10.1111/j.1600-079x.1986.tb00755.x.

DOI:10.1111/j.1600-079x.1986.tb00755.x

Abstract

The ultrastructure of the pinealocytes of wild-captured cotton rats (Sigmodon hispidus) housed in either long or short photoperiod was examined. Quantitative comparison of selected pinealocyte organelles revealed larger relative volumes of mitochondria, granular endoplasmic reticulum and ribosomes, Golgi apparatus, and inclusion bodies, as well as a higher number of dense-core vesicles in the animals kept in short photoperiod (LD 8:16) as compared to those in animals kept in long photoperiod (LD 16:8). These observations suggest that restricting the amount of light to which animals are exposed activates pinealocytes of the cotton rat.

摘要

对捕获的野生棉鼠（棉鼠属）松果体细胞的超微结构进行了检查，这些棉鼠饲养在长光照或短光照周期下。对选定的松果体细胞细胞器进行定量比较发现，与饲养在长光照周期（LD 16:8）的动物相比，饲养在短光照周期（LD 8:16）的动物中线粒体、粗面内质网和核糖体、高尔基体以及包涵体的相对体积更大，并且致密核心囊泡的数量更多。这些观察结果表明，限制动物暴露于光照的量会激活棉鼠的松果体细胞。